Surface configuration of a helmet



FIG. 1 is a right, front perspective view of a surface configuration of a helmet according to my novel design, the left, front perspective view being mirror symmetrical;

FIG. 2 is a left, rear perspective view of the surface configuration of a helmet according to my novel design, the right, rear perspective view being mirror symmetrical;

FIG. 3 is a right side view of the surface configuration of a helmet according to my novel design, the left side view being mirror symmetrical;

FIG. 4 is a front view of the surface configuration of a helmet according to my novel design;

FIG. 5 is a rear view of the surface configuration of a helmet according to my novel design;

FIG. 6 is a top view of the surface configuration of a helmet according to my novel design;

FIG. 7 is a bottom view of the surface configuration of a helmet according to my novel design;

FIG. 8 is a right, front perspective view of the surface configuration of a helmet according to my novel design showing the shield turned up, the left, front perspective view being mirror symmetrical; and,

FIG. 9 is a left, rear perspective view of the surface configuration of a helmet according to my novel design showing the shield turned up, the right, rear perspective view being mirror symmetrical.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a surface configuration of a helmet, as shown and described. 